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> Bicycling Catalog > Parts > Stems > FSA > OS-99 CSI Stem
 
FSA OS-99 CSI Stem

FSA OS-99 CSI Stem

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$179.99
31.8mm
Black
1-1/4-inch and 1-1/8-inch
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Product Details

FSA OS-99 CSI Stem

FSA's K-Force OS-99 CSI is 3-D forged and CNC machined from AL2014 before a uni-directional (UD) carbon weave skin is applied through the Carbon Structural Integration (CSI) process. To further reduce weight the OS-99 uses a 4-bolt sculpted AL2014 alloy/carbon faceplate and titanium hardware. CSI is a process that permanently bonds carbon to alloy, to create a true hybrid product, with many of the benefits of aluminum and carbon.

- Stack Height: 41mm
- Weight: 126g (100mm)

Features and Information

 
  • Part Numbers close open

    Option Barcode Manufacturer's Part Number Vendor Number Store SKU
    31.8mm / Black / 90mm / 6° / 1-1/4-inch and 1-1/8-inch 400310062024 175-0316BKG QBP-SM8010
    31.8mm / Black / 100mm / 6° / 1-1/4-inch and 1-1/8-inch 400310062031 175-0317BKG QBP-SM0055 FSA37162627M
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